Bench-vise



UNITED STATES PATENT orrron.

SAMUEL GISSINGER, OF ALLEGHENY, PENNSYLVANIA.

BENCH-VISE.

Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, SAMUEL GIssINGER, of Allegheny city, Pennsylvania,have made Improvements in Bench-Vises; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the drawing lettered to correspond with and madepart of this specification.

(A) is the long and (B) the short limb.

(C) is the fixed jaw of the long and (D) the horizontally vibrating jawof the short limb.

(E) is the ordinary screw and its fixtures.

(F) is a slide, projecting from each side of the short limb, with a slotto work in connection with a screwlon each side of the long limb. Thisslide is at the bottom of the short limb, and the screw is upon aprojection (G) on the long limb, the face of the projection beingparallel or in the same vertical plane with the face of the fixed jaw(C) of the long limb. Against the face of (G) a wedge (H) works, thewedge point being toward the short limb so that the in clined face ofthe wedge works with the inclined face of the lower end of the shortlimb and the butt of the wedge against the face of (G) of the long limb.This wedge passes up between the limbs and the slide (F) and has avertical upward projection of small size compared with anotherprojection descending below; both projections (I) and (K) beingextensions upward and downward of the butt of the wedge.

The upward projection connects by a link 14,192, dated February 5, 1856.

(L) with the arms (M, N), which again connect by a pivot joint each withthe long and short limbs at a suit-able distance below the ordinaryscrew (E). These arms and jection (K); and the projection (G) being inthe same vertical plane, as to its face, with the face of the fixed jaw(C), the parallelism and practical operation of the wedge is therebysecured so that the bite on the inclined face of the wedge by the shortlimb is always, in point of distance desired between the limbs at thatlevel, in correspondence with the action of the screw E and theparallelism of the vise secured,

the projection (G) and the upper lighter and the lower heavier (each toeach) projections (I) and (K) of the wedge (H) by the contact of theirfaces, and the extent of their faces vertically, preventing the trippingof the wedge as has hitherto been the case.

What I claim as my improvement in bench-Vises is The projection (G) andthe projections (I) and (K) arranged as described and for the purposeset forth.

SAMUEL GISSINGER. [1,. s.]

l/Vitnesses:

J AMES J.JOI-INSTON, JOHN S. KINesLAND, C. KINGSLAND.

